KovácsZ. “Paroniceratidae (Ammonitina) of the Toarcian from the Gerecse Mts (NE Transdanubian Range, Hungary)”. Földtani Közlöny, Vol. 140, no. 2, Mar. 2020, pp. 119-34, https://ojs.mtak.hu/index.php/foldtanikozlony/article/view/2660.